ATF standard is a frozen system after the trigger is pulled. Which is to say that everything supporting the rifle and the trigger are fixed after the gun goes bang. If it continues to go bang, it’s a machine gun. This almost certainly will continue to fire based on that test protocol, which means it’s a machine gun.

These guys should have kept their mouths shut about the slidefire application and presented it to the ATF Tech branch for a letter with the purpose of bipods and big bore rifles. Then allow other people to “leak” videos with slidefire.